Anatomical study of the posterior talofibular ligament: A descriptive analysis of its dual-bundle structure

IF 2 3区医学 Q2 ORTHOPEDICS Foot and Ankle Surgery Pub Date : 2025-01-03 DOI:10.1016/j.fas.2024.12.009

Sérgio Soares , Yessica Alba , Riccardo Garibaldi , Angela Seidel , Xavier Martin Oliva

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Abstract

Background

The lateral ankle ligament complex, consisting of the anterior talofibular ligament (ATFL), calcaneofibular ligament (CFL), and posterior talofibular ligament (PTFL), is essential for ankle stability. While the ATFL and CFL are frequently studied, the PTFL's role remains less explored.

Methods

Twelve fresh-frozen ankle specimens were dissected to analyze the PTFL’s origin, trajectory, and talar insertion, focusing on its bundles and anatomical relationships.

Results

All specimens exhibited a consistent PTFL origin at the lateral malleolar fossa. Two distinct bundles were identified: the pars superficialis (PS) and pars profunda (PP). The PS attached to the posterolateral talus, while the PP attached separately to the posterior aspect of the lateral talar process.

Conclusion

The PTFL comprises two distinct bundles with separate talar insertions. This finding challenges the traditional view of a single-bundled PTFL and may influence understanding of lateral ankle instability as well as its treatment.

Level of evidence

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距腓骨后韧带的解剖学研究：双束结构的描述性分析。

背景：外侧踝关节韧带复合体由距腓骨前韧带（ATFL）、跟腓骨韧带（CFL）和距腓骨后韧带（PTFL）组成，对踝关节稳定至关重要。虽然ATFL和CFL经常被研究，但PTFL的作用仍然很少被探索。方法：对12例新鲜冷冻踝关节标本进行解剖，分析PTFL的起源、轨迹和距骨止点，重点分析其束和解剖关系。结果：所有标本均在外踝窝显示一致的PTFL起源。两个不同的束被鉴定：浅部（PS）和深部（PP）。PS附着于距骨后外侧，而PP分别附着于距骨外侧突的后侧。结论：PTFL由两个不同的束组成，并有独立的距骨插入。这一发现挑战了传统的单束PTFL观点，并可能影响对踝关节外侧不稳定及其治疗的理解。证据等级：四级。

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来源期刊

Foot and Ankle Surgery ORTHOPEDICS-

CiteScore

4.60

自引率

16.00%

发文量

202

期刊介绍： Foot and Ankle Surgery is essential reading for everyone interested in the foot and ankle and its disorders. The approach is broad and includes all aspects of the subject from basic science to clinical management. Problems of both children and adults are included, as is trauma and chronic disease. Foot and Ankle Surgery is the official journal of European Foot and Ankle Society. The aims of this journal are to promote the art and science of ankle and foot surgery, to publish peer-reviewed research articles, to provide regular reviews by acknowledged experts on common problems, and to provide a forum for discussion with letters to the Editors. Reviews of books are also published. Papers are invited for possible publication in Foot and Ankle Surgery on the understanding that the material has not been published elsewhere or accepted for publication in another journal and does not infringe prior copyright.